Changeset d6834e0 in mod_gnutls for include

Timestamp:

Jun 10, 2016, 9:34:08 AM (2 years ago)

Author:

Thomas Klute <thomas2.klute@…>

Branches:

debian/master, debian/stretch-backports, master, upstream

Children:

15b22cb

Parents:

aa68232

git-author:

Thomas Klute <thomas2.klute@…> (06/10/16 09:29:57)

git-committer:

Thomas Klute <thomas2.klute@…> (06/10/16 09:34:08)

Message:

OCSP refresh mutex: Prevent parallel requests

Add a global mutex which a thread must hold before updating a cached
OCSP response. This avoids two threads updating the same response in
parallel. The impact of parallel updates may be small with the
experimental file-based mechanism, but an extra OCSP request over HTTP
would add a lot of overhead.

Note that the new 'gnutls-ocsp' mutex is a global mutex, not one per
virtual host, because a mutex must be registered in pre_config for the
Mutex directive to work.

File:

• include/mod_gnutls.h.in (modified) (1 diff)

include/mod_gnutls.h.in

@@ -215 +215 @@
      * unset. */
     apr_uri_t *ocsp_uri;
+    /* Mutex to prevent parallel OCSP requests */
+    apr_global_mutex_t *ocsp_mutex;
     /* Trust list to verify OCSP responses for stapling. Should
      * usually only contain the CA that signed the server